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The concentration of hormones in the bloodstream is regulated by:
- a)Production of receptor antagonists
- b)Indirect growth-promoting effects
- c)Nutritional signals to the endocrine gland
- d)Positive and negative feedback loops
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The concentration of hormones in the bloodstream is regulated by:a)Pro...
Feedback loops play a critical role in maintaining homeostasis by regulating the concentration of hormones in the bloodstream. Hormone regulation involves complex interactions between the endocrine glands, target organs or tissues, and the hypothalamus and pituitary gland (which act as the central control center for hormone regulation).
Positive feedback loops amplify the initial hormone signal, leading to increased hormone production and release. This can occur in certain situations, such as during childbirth, where oxytocin is released, causing uterine contractions that further stimulate oxytocin release.
Negative feedback loops, on the other hand, act to maintain hormone levels within a narrow range by counteracting any deviations from the set point. When hormone levels reach a certain threshold, negative feedback mechanisms are activated to inhibit further hormone production or release. This helps prevent excessive hormone secretion and maintain balance. For example, in the regulation of thyroid hormones, when blood levels of thyroid hormones are high, they inhibit the release of thyroid-stimulating hormone (TSH) from the pituitary gland, which then reduces thyroid hormone production.
Positive feedback loops amplify the initial hormone signal, leading to increased hormone production and release. This can occur in certain situations, such as during childbirth, where oxytocin is released, causing uterine contractions that further stimulate oxytocin release.
Negative feedback loops, on the other hand, act to maintain hormone levels within a narrow range by counteracting any deviations from the set point. When hormone levels reach a certain threshold, negative feedback mechanisms are activated to inhibit further hormone production or release. This helps prevent excessive hormone secretion and maintain balance. For example, in the regulation of thyroid hormones, when blood levels of thyroid hormones are high, they inhibit the release of thyroid-stimulating hormone (TSH) from the pituitary gland, which then reduces thyroid hormone production.
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